66% (1971)

55% (1984)

67% (1994)

56% (2011)

82% (1957)

62% (2010)

59% (2020)

78% (2010)

64% (1954)

68% (1935)

56% (2012)

59% (2009)

72% (1985)

69% (2005)

51% (2013)

64% (1960)

63% (1993)

54% (1982)

61% (1985)

64% (1987)